#include "mainwindow.h"
#include "ui_mainwindow.h"
#include <QVector>
#include <QTimer>
#include <QTime>
#include <QDateTime>


MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
    ui->setupUi(this);
    setupRealtimeDataDemo(ui->customPlot);
    ui->customPlot->replot();

    ui->checkBox_temp->setChecked(true);
    ui->checkBox_hui->setChecked(true);



    //    long timestamp = 1666482615;
    // 使用QDateTime::fromSecsSinceEpoch将时间戳转换为QDateTime对象
    // 将QDateTime对象转换为字符串格式的日期和时间
    //       QString dateTimeStr = QDateTime::fromMSecsSinceEpoch(timestamp).toString("yyyy-MM-dd HH:mm:ss");

    //       // 输出转换后的日期时间字符串
    //       qDebug() << "转换后的日期时间：" << dateTimeStr;


}

MainWindow::~MainWindow()
{
    delete ui;
}

//画图初始化
void MainWindow::setupRealtimeDataDemo(QCustomPlot *customPlot)
{
    //#if QT_VERSION < QT_VERSION_CHECK(4, 7, 0)
    //QMessageBox::critical(this, "", "You're using Qt < 4.7, the realtime data demo needs functions that are available with Qt 4.7 to work properly");
    //#endif
    //demoName = "Real Time Data Demo";

    // include this section to fully disable antialiasing for higher performance:
    /*
  customPlot->setNotAntialiasedElements(QCP::aeAll);
  QFont font;
  font.setStyleStrategy(QFont::NoAntialias);
  customPlot->xAxis->setTickLabelFont(font);
  customPlot->yAxis->setTickLabelFont(font);
  customPlot->legend->setFont(font);
  */
    customPlot->addGraph(); // blue line
    customPlot->graph(0)->setPen(QPen(Qt::blue));
    customPlot->graph(0)->setName("temp");
    //customPlot->graph(0)->setBrush(QBrush(QColor(240, 255, 200)));
    //customPlot->graph(0)->setAntialiasedFill(false);
    customPlot->addGraph(); // red line
    customPlot->graph(1)->setPen(QPen(Qt::red));
    customPlot->graph(1)->setName("hui");
    //customPlot->graph(0)->setChannelFillGraph(customPlot->graph(1));


    customPlot->xAxis->setTickLabelType(QCPAxis::ltDateTime);
    customPlot->xAxis->setDateTimeFormat("MM-dd hh:mm:ss");
    customPlot->xAxis->setAutoTickStep(false);
    customPlot->xAxis->setTickStep(2);
    customPlot->axisRect()->setupFullAxesBox();

    // make left and bottom axes transfer their ranges to right and top axes:
    //connect(customPlot->xAxis, SIGNAL(rangeChanged(QCPRange)), customPlot->xAxis2, SLOT(setRange(QCPRange)));
    //connect(customPlot->yAxis, SIGNAL(rangeChanged(QCPRange)), customPlot->yAxis2, SLOT(setRange(QCPRange)));

    // setup a timer that repeatedly calls MainWindow::realtimeDataSlot:
    connect(&dataTimer, SIGNAL(timeout()), this, SLOT(realtimeDataSlot()));
    dataTimer.start(1000); // Interval 0 means to refresh as fast as possible
    customPlot->legend->setVisible(true);
}

void MainWindow::realtimeDataSlot()
{
    //key的单位是秒
    double key = QDateTime::currentDateTime().toMSecsSinceEpoch()/1000.0;
    qsrand(QTime::currentTime().msec() + QTime::currentTime().second() * 10000);
    //使用随机数产生两条曲线
    double value0 = qrand() % 100;
    double value1 = qrand() % 80;
    if (ui->checkBox_temp->isChecked())
        ui->customPlot->graph(0)->addData(key, value0);//添加数据1到曲线1
    if (ui->checkBox_hui->isChecked())
        ui->customPlot->graph(1)->addData(key, value1);//添加数据2到曲线2
    //删除8秒之前的数据。这里的8要和下面设置横坐标宽度的8配合起来
    //才能起到想要的效果，可以调整这两个值，观察显示的效果。
    ui->customPlot->graph(0)->removeDataBefore(key-8);
    ui->customPlot->graph(1)->removeDataBefore(key-8);

    //自动设定graph(1)曲线y轴的范围，如果不设定，有可能看不到图像
    //也可以用ui->customPlot->yAxis->setRange(up,low)手动设定y轴范围
    ui->customPlot->graph(0)->rescaleValueAxis();
    ui->customPlot->graph(1)->rescaleValueAxis(true);

    //这里的8，是指横坐标时间宽度为8秒，如果想要横坐标显示更多的时间
    //就把8调整为比较大到值，比如要显示60秒，那就改成60。
    //这时removeDataBefore(key-8)中的8也要改成60，否则曲线显示不完整。
    ui->customPlot->xAxis->setRange(key+0.25, 8, Qt::AlignRight);//设定x轴的范围
    ui->customPlot->replot();
}
